To the best of my knowledge it will not affect the ranking. Best wishes Mark

It could help or it could hurt. If you improve the readability, it will help. If you decrease the readability, it will hurt.

Hi Chris thanks for contacting me. Firstly I understand your concerns that are connected with the font size. I have noted that up to date sites have larger fonts. I am not personally familiar with the Omega theme and do not see my forte as being technical stuff. I joined WA under Kyle and he has always been very helpful to me. I will place your enquiry with him. I am sure that this can sorted for you. I would going forward like to assist you in any way I can with your online endeavours. I see myself as having a leaning towards the content creation side of this business. Very best wishes Mark

Did you upgrade the theme or a plugin recently? Did you install a new plugin recently? Are you looking at the site in a new browser or on a new computer?

These things don't just happen, but unfortunately there are any number of culprits. Check those first. You can also try deactivating your plugins one at a time to see if that causes it to change back, to narrow down the culprits. When you do this though, hold down shift when you hit the reload button on the page to ensure you're pulling a fresh copy of the page from the server.

Let me know where you're at after all that.